R5_x275_000_0002_ema_7939_0001_raw eng UTF8 dataset service Michael S. Williamson Texas A&M University-Corpus Christi +1 361-825-2048 HRI 213E Corpus Christi TX 78412 USA michael.williamson@tamucc.edu pointOfContact 2026-05-11 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 3 column row temporal Profile - R5.x275.000.0002 - ema-7939-0001-raw - 28.94N, 88.04W - 2017-05-02 2021-05-05 creation 2021-05-05 issued erddap.griidc.org R5_x275_000_0002_ema_7939_0001_raw Lynn K. (Nick) Shay University of Miami / Rosenstiel School of Marine and Atmospheric Science nshay@rsmas.miami.edu https://data.gulfresearchinitiative.org/data/R5.x275.000:0002 information web browser Background Information Background information from the source information originator Johna Rudzin jRudzin@rsmas.miami.edu contributor Raw temperature, salinity, and biogeochemical profile data acquired from APEX-EM floats deployed via U.Miami R/V Walton Smith in the northern Gulf of Mexico in May 2017. Period of record is for the first 10 days of operation during a cold front passage. The first day of record for each float ranges from May 2, 2017, to May 7, 2017. Technology for measuring subsurface ocean currents (including temperature and salinity) is available using the Autonomous Profiling Explorer floats with electromagnetic sensors (APEX-EM) recently developed by Teledyne Webb Research and the University of Washington. The float acquires temperature and salinity profiles using a Seabird sensor. This APEX-EM profiling float platform was equipped with chemical and bio-optical sensors: Aanderaa Optode sensor measuring dissolved oxygen, and the WET Labs ECO Puck sensor which combines measurement of chlorophyll fluorescence (proxy of phytoplankton abundance), measurement of backscatter (as proxy of particle concentration) and colored dissolved organic matter (CDOM) fluorescence (incl. fluorophoric oil components). Given the passage of a strong atmospheric front in May 2017, these data were used in an initial evaluation of the state-of-the-art float and its response to strong wind-driven currents. This float technology enables investigators to look more closely at the upper ocean response to strong forcing events that impacts biochemistry and hydrocarbon dispersion. Sampling rates were changed by updating mission profiles from continuous to profiling modes between specific depths by changing the piston counts on the missions via Iridium remote sensing when the float reaches the free surface. Lynn K. (Nick) Shay University of Miami / Rosenstiel School of Marine and Atmospheric Science nshay@rsmas.miami.edu https://data.gulfresearchinitiative.org/data/R5.x275.000:0002 information web browser Background Information Background information from the source information pointOfContact 10-day 700nm absorption apex atmospheric backscatter backscattering bbp biogeochemical cdom chemistry chl chlorophyll chlorophyll fluorescence chorophyll color colored concentration conductivity conversion coordinate counts crs ctd ctd-sbe9 data day deepwater horizon degree density dissolved dissolved o2 earth em-apex em-apex float ema ema-7939-0001-raw evaluation float floats fluorescence gom grid gulf horizontal identifier initial input instrument instrument1 labs mapping marine mass matter measured mexico miami mole molecular O2 ocean ocean color oceans optical optical properties organic oxygen platform practical pressure profile properties raw reference rosenstiel salinity sbe9 school science sea seawater smith sonde spatial spectra statistics system temperature university variable walton water wet theme Earth Science > Oceans > Salinity/Density > Salinity Earth Science > Oceans > Ocean Temperature > Water Temperature Earth Science > Oceans > Ocean Pressure > Water Pressure Earth Science > Oceans > Ocean Chemistry > Oxygen Earth Science > Oceans > Ocean Chemistry > Chlorophyll theme GCMD Science Keywords Three-Dimensional Gulf Circulation and Biogeochemical Processes Unveiled by State-of-the-Art Profiling Float Technology and Data Assimilative Ocean Models. project time latitude longitude sea_water_pressure sea_water_temperature sea_water_practical_salinity mole_concentration_of_dissolved_molecular_oxygen_in_sea_water cdom mass_concentration_of_chlorophyll_a_in_sea_water theme CF Standard Name Table v72 These data may be redistributed and used without restriction. Three-Dimensional Gulf Circulation and Biogeochemical Processes Unveiled by State-of-the-Art Profiling Float Technology and Data Assimilative Ocean Models. largerWorkCitation project Unidata Common Data Model Profile largerWorkCitation project eng geoscientificInformation 1 -88.036285 -88.036285 28.948498 28.948498 seconds 2017-05-02T18:02:00Z 2017-05-02T18:02:00Z Profile - R5.x275.000.0002 - ema-7939-0001-raw - 28.94N, 88.04W - 2017-05-02 2021-05-05 creation 2021-05-05 issued Lynn K. (Nick) Shay University of Miami / Rosenstiel School of Marine and Atmospheric Science nshay@rsmas.miami.edu https://data.gulfresearchinitiative.org/data/R5.x275.000:0002 information web browser Background Information Background information from the source information originator Johna Rudzin jRudzin@rsmas.miami.edu contributor Raw temperature, salinity, and biogeochemical profile data acquired from APEX-EM floats deployed via U.Miami R/V Walton Smith in the northern Gulf of Mexico in May 2017. Period of record is for the first 10 days of operation during a cold front passage. The first day of record for each float ranges from May 2, 2017, to May 7, 2017. Technology for measuring subsurface ocean currents (including temperature and salinity) is available using the Autonomous Profiling Explorer floats with electromagnetic sensors (APEX-EM) recently developed by Teledyne Webb Research and the University of Washington. The float acquires temperature and salinity profiles using a Seabird sensor. This APEX-EM profiling float platform was equipped with chemical and bio-optical sensors: Aanderaa Optode sensor measuring dissolved oxygen, and the WET Labs ECO Puck sensor which combines measurement of chlorophyll fluorescence (proxy of phytoplankton abundance), measurement of backscatter (as proxy of particle concentration) and colored dissolved organic matter (CDOM) fluorescence (incl. fluorophoric oil components). Given the passage of a strong atmospheric front in May 2017, these data were used in an initial evaluation of the state-of-the-art float and its response to strong wind-driven currents. This float technology enables investigators to look more closely at the upper ocean response to strong forcing events that impacts biochemistry and hydrocarbon dispersion. Sampling rates were changed by updating mission profiles from continuous to profiling modes between specific depths by changing the piston counts on the missions via Iridium remote sensing when the float reaches the free surface. ERDDAP tabledap 1 -88.036285 -88.036285 28.948498 28.948498 seconds 2017-05-02T18:02:00Z 2017-05-02T18:02:00Z tight ERDDAPtabledapDatasetQueryAndAccess https://erddap.griidc.org/erddap/tabledap/R5_x275_000_0002_ema_7939_0001_raw ERDDAP:tabledap ERDDAP-tabledap ERDDAP's tabledap service (a flavor of OPeNDAP) for tabular (sequence) data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for different purposes. download Profile - R5.x275.000.0002 - ema-7939-0001-raw - 28.94N, 88.04W - 2017-05-02 2021-05-05 creation 2021-05-05 issued Lynn K. (Nick) Shay University of Miami / Rosenstiel School of Marine and Atmospheric Science nshay@rsmas.miami.edu https://data.gulfresearchinitiative.org/data/R5.x275.000:0002 information web browser Background Information Background information from the source information originator Johna Rudzin jRudzin@rsmas.miami.edu contributor Raw temperature, salinity, and biogeochemical profile data acquired from APEX-EM floats deployed via U.Miami R/V Walton Smith in the northern Gulf of Mexico in May 2017. Period of record is for the first 10 days of operation during a cold front passage. The first day of record for each float ranges from May 2, 2017, to May 7, 2017. Technology for measuring subsurface ocean currents (including temperature and salinity) is available using the Autonomous Profiling Explorer floats with electromagnetic sensors (APEX-EM) recently developed by Teledyne Webb Research and the University of Washington. The float acquires temperature and salinity profiles using a Seabird sensor. This APEX-EM profiling float platform was equipped with chemical and bio-optical sensors: Aanderaa Optode sensor measuring dissolved oxygen, and the WET Labs ECO Puck sensor which combines measurement of chlorophyll fluorescence (proxy of phytoplankton abundance), measurement of backscatter (as proxy of particle concentration) and colored dissolved organic matter (CDOM) fluorescence (incl. fluorophoric oil components). Given the passage of a strong atmospheric front in May 2017, these data were used in an initial evaluation of the state-of-the-art float and its response to strong wind-driven currents. This float technology enables investigators to look more closely at the upper ocean response to strong forcing events that impacts biochemistry and hydrocarbon dispersion. Sampling rates were changed by updating mission profiles from continuous to profiling modes between specific depths by changing the piston counts on the missions via Iridium remote sensing when the float reaches the free surface. OPeNDAP 1 -88.036285 -88.036285 28.948498 28.948498 seconds 2017-05-02T18:02:00Z 2017-05-02T18:02:00Z tight OPeNDAPDatasetQueryAndAccess https://erddap.griidc.org/erddap/tabledap/R5_x275_000_0002_ema_7939_0001_raw OPeNDAP:OPeNDAP OPeNDAP An OPeNDAP service for tabular (sequence) data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes. download Profile - R5.x275.000.0002 - ema-7939-0001-raw - 28.94N, 88.04W - 2017-05-02 2021-05-05 creation 2021-05-05 issued Lynn K. (Nick) Shay University of Miami / Rosenstiel School of Marine and Atmospheric Science nshay@rsmas.miami.edu https://data.gulfresearchinitiative.org/data/R5.x275.000:0002 information web browser Background Information Background information from the source information originator Johna Rudzin jRudzin@rsmas.miami.edu contributor Raw temperature, salinity, and biogeochemical profile data acquired from APEX-EM floats deployed via U.Miami R/V Walton Smith in the northern Gulf of Mexico in May 2017. Period of record is for the first 10 days of operation during a cold front passage. The first day of record for each float ranges from May 2, 2017, to May 7, 2017. Technology for measuring subsurface ocean currents (including temperature and salinity) is available using the Autonomous Profiling Explorer floats with electromagnetic sensors (APEX-EM) recently developed by Teledyne Webb Research and the University of Washington. The float acquires temperature and salinity profiles using a Seabird sensor. This APEX-EM profiling float platform was equipped with chemical and bio-optical sensors: Aanderaa Optode sensor measuring dissolved oxygen, and the WET Labs ECO Puck sensor which combines measurement of chlorophyll fluorescence (proxy of phytoplankton abundance), measurement of backscatter (as proxy of particle concentration) and colored dissolved organic matter (CDOM) fluorescence (incl. fluorophoric oil components). Given the passage of a strong atmospheric front in May 2017, these data were used in an initial evaluation of the state-of-the-art float and its response to strong wind-driven currents. This float technology enables investigators to look more closely at the upper ocean response to strong forcing events that impacts biochemistry and hydrocarbon dispersion. Sampling rates were changed by updating mission profiles from continuous to profiling modes between specific depths by changing the piston counts on the missions via Iridium remote sensing when the float reaches the free surface. ERDDAP Subset 1 -88.036285 -88.036285 28.948498 28.948498 seconds 2017-05-02T18:02:00Z 2017-05-02T18:02:00Z tight ERDDAP_Subset https://erddap.griidc.org/erddap/tabledap/R5_x275_000_0002_ema_7939_0001_raw.subset search Subset Web page to facilitate selecting subsets of the dataset download physicalMeasurement profile short ema-7939-0001-raw time double Time sea_water_pressure double Sea Water Pressure sea_water_temperature double Raw temperature as measured by CTD sea_water_salinity double Raw salinity as measured by CTD dissolved_raw_oxygen double Raw dissolved oxygen optical_backscattering_700nm double Optical backscattering at 117 degree, 700nm optical_absorption_spectra_at_ CDOM double CDOM concentration from Fluorescence, WET Labs CDOM concentration_of_chlorophyll double Chorophyll_a concentration backscatter_signal double Raw backscatter counts, input for conversion to bbp cdom_signal double Raw CDOM counts, input for conversion to CDOM chl_fluotescence_signal double Raw fluorescence counts, input for conversion to Chl_a platform char RV_Walton_Smith instrument char CTD-SBE9 instrument1 char EM-APEX float crs int grid mapping variable for horizontal spatial coordinate reference system (CRS) Michael S. Williamson Texas A&M University-Corpus Christi +1 361-825-2048 HRI 213E Corpus Christi TX 78412 USA michael.williamson@tamucc.edu distributor OPeNDAP DAP/2.0 https://erddap.griidc.org/erddap/tabledap/R5_x275_000_0002_ema_7939_0001_raw.html order Data Subset Form ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types. download https://erddap.griidc.org/erddap/tabledap/R5_x275_000_0002_ema_7939_0001_raw.graph order Make-A-Graph Form ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data. mapDigital dataset 2021-05-05T21:12:51Z This record was created from dataset metadata by ERDDAP Version 2.02